The results the toxicity of Sitopylus oryzae (adult ,Tribolium castaneum (adult,larvae) from Table 7. cypermethrine at concentrations of 0.3 ppm is due to the LT50 18.992 min, 19.599 and 21.018minutes , followed by the concentration of 0.2 ,0.1 ,0.05 and control respectively,